Tuesday, 1 November-2011-Timeline of the Fukushima Daiichi Nuclear Power Plant Disaster
TEPCO reports the completion (Fukushim Nuclear Plant ) of a cover for the reactor unit 1, which is 54 metres high, 47 metres wide and 42 metres deep. The cover has a built-in ventilation system that is supposed to filter radioactive material.
Wednesday, 2 November-2011-Timeline of the Fukushima Daiichi Nuclear Power Plant Disaster
Boric acid is injected into reactor number 2 after the discovery of xenon in its containment vessel. The presence of xenon may be an indication that a self-sustained fission reaction has been occurring .
Friday, 4 November -2011-Timeline of the Fukushima Daiichi Nuclear Power Plant Disaster
TEPCO retracts Wednesday's statement about a possible self-sustained fission reaction, and now claims that the xenon was a result of the normal decay of radioisotopes in the fuel.
Thursday,14 November-2011-Timeline of the Fukushima Daiichi Nuclear Power Plant Disaster
The Japanese government bans shipments of rice from a farm near the Fukushima Dai-ichi nuclear plant. 630 becquerels of cesium per kilogram was found in the rice, over the 500 becquerels of cesium per kilogram allowed for human consumption. (From hundreds of spots tested around Fukushima, none had previously exceeded the limit.)
Tuesday, 29 November-2011-Timeline of the Fukushima Daiichi Nuclear Power Plant Disaster
TEPCO now claims that there was no explosion at reactor number 2 on March 15 as previously reported, and that instead the explosion occurred at reactor number 4. However, TEPCO has no explanation for the observed rise in radioactive emissions from reactor 2 at this time.
Wednesday, 30 November -2011-Timeline of the Fukushima Daiichi Nuclear Power Plant Disaster
TEPCO reports that a new computer simulation of the meltdown shows nuclear fuel rod material melting through the pressure vessel and deep inside the concrete of the primary containment vessel, within a foot of breaching it fully in Reactor No. 1. In the pessimistic scenario, all of the fuel of Reactor No. 1 has escaped the pressure vessel, as well as a majority of the fuel for Reactor No. 2 and 3.
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